Hydroxypropylmethylrubicin (HPMC) ke thepa ea cellulosic, pulp kapa k'hothone e ka sebelisoang ho hloekisa makhasi a lehong. Pele ho ts'ebetso ea alkalization kapa alkalization e tlameha ho senngoa. Tšenyo ea mechine e ka senya sebopeho se akaretsang sa thepa ea selulose ea pampiri, ka tsela eo e fokotsa polymerization le crystallinity, e eketsa sebaka sa eona se khethehileng sa holim'a metsi, kahoo e eketsa matrix e ka ba macromolecular ternary le cellulose.
Hydroxymethylcellulose e sebelisoa e le substrate tlhahiso ea oli. Moetso oa tšebeliso o ka phethela ts'ebeliso ea tsoekere, oa ntlafatsa sekhahla sa ts'ebeliso ea lisebelisoa, oa fokotsa masala a substrate mokelikeli o belisoang, 'me oa fokotsa litšenyehelo tsa ho hloekisa metsi a litšila. Litšobotsi tsa motsoako li thusa ho ntlafatsa ts'ebetso ea batch, batch e feptjoang le mekhoa e tsoelang pele ea ho belisoa, ho qoba ho qhekella ha likarolo tse mahareng le litekanyetso tsa dilution, hape ho thusa ho lokisoa ha mekhoa ea ho belisoa. Kaha HPMC e na le ts'ebetso e ts'oanang le li-ether tse ling tse qhibilihang ka metsing, e ka sebelisoa e le ntho e etsang filimi, thickener, emulsifier le stabilizer bakeng sa pente ea latex le pente ea resin e qhibilihang ka metsi, e nang le khanyetso e ntle ea ho apara, ho roala junifomo le ho khomarela. ho ntlafatsa tsitsipano ea holim'a metsi, botsitso ba acid-base le ho lumellana le li-pigments tsa tšepe.
Sebopeho sa hydroxypropylmethylcellulose (HPMC) se ferekanngoa, empa ka molao-motheo, empa tahlehelo ea substrate, base..etherification, dissolution
Ho hlaphoheloa ha moemeli ka centrifugation, ho hlatsoa, ho omisa le ho ama tikoloho e 'ngoe le e' ngoe e ruile ka litsebo le tsebo ea mantlha.
Lisebelisoa tse thusang le taolo ea nako ea ho shebella li tla thusa ho netefatsa boleng ba sehlahisoa le mokhoa o tšepahalang oa tlhahiso. E ama bongata ba metsi ka har'a seretse sa hypromellose dry-mix seretse se bolokang metsi sa hydroxypropyl methylcellulose ether mortar ho khothalletsa ho tsoela pele ha metsi a samente, seretse le substrate ho eketsa nako ea ho khomarela.
Ho na le phello e kholo ea ho boloka metsi, ho boloka metsi, ho boloka mongobo ke putty powder, adhesion le lubrication function. E sebelisoa haholo indastering ea kaho, indasteri ea pente le liindasteri tse ling tse ngata, hydroxypropyl methylcellulose e bohlokoa bakeng satlhahiso ea hydroxypropyl methylcellulose. Mocheso oa mocheso oa gelation o phahame haholo ho feta oa methylcellulose. Lime le soda li na le phello e fokolang ts'ebetsong, empa li ka potlakisa ho qhibiliha ha matrix le ho eketsa viscosity. Ha joala ba polyvinyl, starch ether, gum ea meroho le pente ea hydroxypropyl methylcellulose, joalo-joalo, tharollo ea thepa ea mohaho o ka holimo. Ha u sebelisa seretse, gypsum, putty powder kapa lisebelisoa tse ling e le sekhomaretsi, se ka ntlafatsa ts'ebetso le ho lelefatsa nako ea ho sebetsa. E ka sebelisoa bakeng sa mokhabiso, ho peista lithaele, 'mabole, polasetiki le ho fokotsa tšebeliso ea kutu ea samente ea bohata. Mokelikeli o bolokang metsi ka mor'a ho omisa o ke ke oa phunyeha ka potlako, 'me matla ka mor'a ho folisa a ntlafatsoa.
Nako ea poso: Dec-20-2022